Migrate all Cytoscape visual properties to ele.data() mappers

## Description

After #1725 validates the `ele.data()` + `data()` mapper approach for `background-color`, this slice migrates all remaining Cytoscape visual properties to the new system.

Properties to migrate include: icon/background-image, shape, background-opacity, border (width, color, style), and all edge visual properties (line-color, line-thickness, line-style, arrows, label styles).

## Preferred Solution

- Move all visual properties to `ge_`-prefixed fields in `ele.data()`
- Replace all per-type selectors in the stylesheet with generic `data()` mappers
- Extend `useSyncStylesToGraph` to handle all properties
- Delete `useGraphStyles` / `createGraphStyles` and the per-type selector generation
- Delete `useAllVertexPreferences()` / `useAllEdgePreferences()` if no longer needed

## Related Issues

- Part of #1677
- Depends on #1725
- Supersedes #1678

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Start with the useSyncStylesToGraph entry point and trace the existing useGraphStyles, createGraphStyles, useAllVertexPreferences(), and useAllEdgePreferences() flows; review dependency #1725 first. Done means the listed vertex and edge visual properties use ge_-prefixed ele.data() fields and generic data() mappers, with the old per-type selector generation and obsolete hooks removed.

Written by the indexing model from the issue text.